Security is not a product, but a process.

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2
votes
0answers
53 views

ModSecurity phase not working?

Sorry I am very new to modsecurity (2.8). So I made my first rule to block a referrer spam with the following: SecRule REQUEST_HEADERS:Referer "buttons\-for\-website\.com" ...
0
votes
3answers
66 views

aws ec2 security group and centos ip tables

I try to change the SSH port from 22 to another port (218). In AWS EC2, I shall add the rules in security group or in IP Tables? Is there any guideline/references recommended for EC2 Security ...
1
vote
3answers
463 views

Confused about what I'm seeing in my apache access log (think I might have been hacked)?

I have a VPS running CentOS. I installed apache and configured the access log. Just checked it and found some interesting traffic: VPS-Hostname MYIP MYIP - - [23/Dec/2014:16:47:20 -0500] "GET / ...
1
vote
1answer
61 views

What is the best way to block IPs from an apache2 web server?

I'm asking myself whats the best way to block certain IP Addresses (or whole blocks from countries like china, south korea) from accessing my apache2 web server. I'm aware of methods using Allow ...
4
votes
2answers
69 views

Website is being targeted by mail bots

I have a small website. When I perform a netstat is shows a lot of traffic from .p.mail. I think this is some kind of mail bot, trying to harvest email addresses from my website. How can I prevent ...
0
votes
1answer
32 views

Pricing of Key Pairs and Security Groups on AWS?

My free AWS account expired. I deleted all S3 and EC2 resources, but am wandering if I can leave the Key Pairs and Security Groups without having to pay for them. (My account resources look like this ...
-2
votes
1answer
89 views

How do you “prevent powerful accounts from being used on unauthorized systems”? [closed]

I was browsing through Microsoft's Best Practices for Securing Active Directory and saw the chart linked which includes some of the best practices included in the document, rated by importance. At ...
13
votes
3answers
1k views

Enable SSH shell access but disable SFTP access

I've searched for a viable answer to this question, and most of the answers include advice on why to not do it. However, here's the scenario, and what makes it necessary: I have a console app, and in ...
-1
votes
1answer
435 views

Restrict shared folder access to specific computer/IP [closed]

How to configure a server [having DNS and ADS roles installed user account created/configured] to restrict its shared folder access to a specific computer in the network. Sol-1: Solution proposed ...
5
votes
2answers
106 views

Perfect Forward Secrecy (PFS) for mail servers

Perfect Forward Secrecy is an important enhancement to SSL/TLS communications, helping prevent captured SSL traffic from being decrypted even if the attacker has the private key. It's easy enough to ...
2
votes
2answers
42 views

Are redirected GET request to HTTPS secure?

This affects a lot of thank-you pages from 3rd party carts, etc. Are GET requests to HTTP that are redirect to HTTPS secure? Or, can they be snooped before the redirect takes place? Thank you
7
votes
2answers
165 views

How widely supported is forced TLS on inbound SMTP connections?

I run an MTA consisting of the standard Postfix, SpamAssassin, ClamAV, SPF/DKIM checks etc. This MTA is used for inbound email only, doesn't host any accounts and forwards any mail that passes said ...
1
vote
1answer
41 views

HTTPS posts to HTTP URL's insecure?

Have to deal with some incorrectly assigned/redirected posts from an HTTPS server to HTTP URL's. How much of a security risk are these? Are they vulnerable to something like a man-in-the-middle ...
6
votes
2answers
391 views

For an internet-facing, all-roles-in-one Exchange server, what do I need to let through the firewall?

As the result of a recent penetration test, in which we did not fare well, it has been brought to my attention that our internet facing, all-roles-in-one, Exchange 2010 SP3 server has no firewall in ...
0
votes
1answer
61 views

Apache2 Mod_spamhaus Whitelist

We are using Apache2 mod_spamhaus and many customers were banned using the "Post" method. There is no way to deny mod_spamhaus ban continuously our customers making false positive or ban customers ...
0
votes
1answer
77 views

Are department-wide shares a bad idea?

Let's say an organization has a department with 10-15 users who sometimes need to share files between each other. They currently have an open share, where anyone read read / write to the share. If ...
0
votes
1answer
61 views

Centralised log monitoring for linux servers [closed]

I've read several QA on this site about monitoring servers, but I found out, that none of them centralises all the logs I want to watch. To describe my situation: 10 linux hosts Using logwatch to ...
1
vote
0answers
123 views

OpenVAS 7 failing to SSH into a test server

My local machine is hosting a Kali VM. I am trying to run local security tests using the VM's OpenVAS 7 on a server running Ubuntu 12.04.5. When I run SSH Authorization Test I get the following ...
2
votes
1answer
54 views

Authentication of saltmaster against salt minions

I am just getting started with salt and I am wondering how the saltmaster is being authenticated against the clients. I know that when connecting a minion the master has to accept the public key of ...
0
votes
1answer
43 views

Remote SCP & SSFTP access to linux server denied

This situation is a bit embarrassing but I could really use some help. I took steps to secure my linux server by carrying out the following steps: created and use a different user to use in place ...
0
votes
1answer
32 views

Using Cloud Servers and Firewall

I would like to ask if the configuration of "firewall rules eg. only allowing port 80.. when configuring a server instance on cloud services such as google cloud and amazon aws is securely equivalent ...
2
votes
0answers
29 views

Device not accepting connections from a forwarded port. Security Issue?

I am forwarding a port through to a PLC/Management unit type device for a heatpump. The device accepts local connections from the LAN on port 80. It runs a normal web site on port 80 for management. ...
3
votes
2answers
193 views

High number connections coming from an IP

On our corporate network we're detecting workstations opening too many connections to the IP address 75.126.196.159 (port 3478) causing the Cisco ASA Firewall 5550 to detect a "SYN Attack" and reach ...
0
votes
1answer
204 views

Enabling TLS1.0? Cannot communicate securely with peer: no connection encryption algorithms

For over a year I have been running a photo based website that allows customers to order prints, which are subsequently fulfilled by a printing company. Orders are posted in XML format to a ...
0
votes
0answers
203 views

OpenSSL 1.0.1e-2+deb7u14 Debian Wheezy and CVE-2014-0224

According to Debian security tracker CVE-2014-0224 vulnerability is fixed in OpenSSL 1.0.1e-2+deb7u10. https://security-tracker.debian.org/tracker/CVE-2014-0224 I have: #apt-cache policy openssl ...
1
vote
1answer
82 views

Lockdown Mozilla Thunderbird on Windows Remote Desktop Services

I've installed Mozilla Thunderbird 31.3.0 on a Windows Server 2012 R2 which has the Remote Desktop Services role. I want to configure the Thunderbird program and set each user's email account etc and ...
1
vote
1answer
323 views

nginx - deny all *.php requests except index.php for security reasons

os: CentOS 7 nginx: 1.6.2 httpd: apache 2.4.6 cms: Drupal 7 After my server was compromised I removed all from server, reinstalled OS and soft, and restored data from backup. Now I configure all ...
-1
votes
2answers
59 views

HowTo Track an E-Mail on it's voyage [closed]

Is there any way to track an E-Mail during it's "journey"? A friend of mine believes, that People the sports club he is involved with and where he has an E-Mail adress, is reading the E-Mails of all ...
-4
votes
4answers
78 views

Blocking another Win 2008 R2 admin from accesing some important folders [closed]

I have sold half my dedicated server to somebody but I dont want them accessing my web hosted Plesk files for my Wordpress website. As some of them are custom and confidential. I gave them local ...
0
votes
1answer
34 views

How should a wildcard certificate be used?

I have a wildcard certificate (pfx file) and I have doubts on how to use that. Should I install that on all of my application servers or alternatively create a new certificate and sign it with the ...
2
votes
2answers
110 views

Restrict access to active directory attributes from a particular computer?

I know that some attributes in AD are classified as personal information and some are classified as public information (see the "property set" column here - ...
0
votes
0answers
83 views

Enabling the Internet Connection on an EC2 Windows Server 2012 Machine

I've disabled the firewall: netsh firewall set opmode disable I've made sure to accept all inbound and all outbound connections: Is there anything that I should be installing or adding on to the ...
-2
votes
2answers
269 views

Removing the Security Alert Outlook pops up for internal network domain clients - Remove security?

I have several Outlook clients on the internal network pointing to the internal DNS name of the Exchange 2010 SP1 R2 server. The name we're using is exchange2.example.local. Since new guidelines ...
1
vote
2answers
72 views

Should I sudo as root or use a public key [duplicate]

I have read a few times to disable root login and sudo as root using another user. But is using a public key as good if not better security?
0
votes
1answer
31 views

Solaris 11 / OpenSolaris - stop processes from listening?

I would like to write a script to secure Solaris 11 servers in preparation for internet access. In addition to enabling ipfilter, I would like to disable network-accessible services that are not ...
-3
votes
1answer
39 views

Data Backup from aws to other cloud storage for backups if aws account get hacked [duplicate]

We are thinking to make a backup of all our AWS data (RDS and S3) to some other cloud sources, because there is a possibility that a developer of company AWS account get hacked. The hacker could then ...
0
votes
0answers
66 views

Remove mapping drives from RDP to user from exteral network

I would like to know if you guys have a solution to my problem. I have a terminal server 2012 that can be accessed remotely after a VPN connection and from the LAN. My question is how can I create a ...
0
votes
1answer
19 views

How to stop username enumeration in Samba on Ubuntu?

I'm using Ubuntu 12.04 LTS to serve a web application to a local Windows network. A recent pen test highlighted that it was possible to enumerate local user accounts on the Samba service. I have been ...
0
votes
0answers
61 views

Server 2012 LDAP signing - “Number of simple binds performed without SSL/TLS..”

Here is our log on event 8227: Number of simple binds performed without SSL/TLS: 88 Number of Negotiate/Kerberos/NTLM/Digest binds performed without signing: 0 I have set LDAP Interace Events ...
0
votes
0answers
34 views

setting up DANE fails, error with “could not get cert chain from ssl”

I successfully setup DNSSEC and enabled it on my domain. I'd love to make use of my DANE. I created a standard self signed certificate openssl req -x509 -newkey rsa:4096 -keyout key.pem -out cert.pem ...
0
votes
1answer
36 views

Disable Apache server signature [closed]

I've just set expose_php to off via WHM's Configure PHP and suExec. For security purposes I want to additionally hide: Apache ServerSignature/ServerTokens/PHP X-Powered-By I can't find a relevant ...
3
votes
1answer
244 views

Determine if possible successful probe is successful exploit?

A logwatch report outputted the following message. A total of 1 possible successful probes were detected (the following URLs contain strings that match one or more of a listing of strings that ...
-6
votes
1answer
41 views

Verify HASH value of certificate [closed]

How can I verify Hash value of a certificate I get from a website using openssl? Say for example or facebook.com.
-2
votes
1answer
26 views

EV Certificate on browser [closed]

How does the browser recognise that the presented certificate actually is an EV certi cate? I went through this article but I couldn't figure out any thing for sure.
0
votes
1answer
75 views

Debian Secure Network [closed]

I have an industrial PC with 3 Ethernet ports (RJ45, 100 MB/s). I would like to designate one as an incoming internet connection (from the company), and the other two on a private network. The private ...
0
votes
0answers
22 views

Cups Does not ask for authentication for remote access at all, it will either not ask and work or not ask and not work

I can find an infinite amount of questions asking how to remove authentication but I cant seem to find any that want to be asked for a prompt before being able to access the web service GUI. I have ...
0
votes
0answers
66 views

Lock Down Users on Cygwin SFTP Server

How do I lock down sftp users in Cygwin so that they can't read from random directories such as /etc. i set up local windows accounts for each sftp user on the machine. I've used /etc/fstab file to ...
1
vote
1answer
91 views

Kerberos SSH Man-in-the-Middle for Data Sniffing

Kerberos clearly keeps an attacker from getting a user's credentials in an SSH man-in-the-middle scenario (one where the attacker has gotten the user to trust their server's public key and redirects ...
0
votes
1answer
88 views

Apache - Drop connection for anything but HTTP 200 status

Is there a way to configure Apache to drop connection for any request resulting in an HTTP status other than 200 (or possibly a list of status codes)? The idea is that, rather than returning any ...
0
votes
1answer
17 views

FIM2010 R2 SP1 service account requirements on database after installation

We're in the process of updating our Forefront Identity Manager to 2010 R2 SP1. The SQL Server instance for the old installation has the FIM service account in the sysadmin role, as is required for ...